25% off a helmet with new bike purchase!
Great bikes at great prices for great kids!

What's New?

Is it New Bike Time? Always!
It's pretty obvious this is when people are out on the roads & trails having fun on their new bikes. This is a great time for a new bike because even the worst "winter" you'll see in the Bay Area offers plenty of nice days for riding, and who wants to waste a nice day? Chain Reaction features the very best bikes from Trek & Electra, as well as the highest-quality travel bikes from Bike Friday. Road, Mountain, Hybrid, Electric assist, Kids... we've got them all. Probably the best selection in a single location you'll find anywhere on the peninsula too.
Got a bike that needs repairs?
We can handle that! If you purchased your bike from us, remember that you can bring it in anytime, without calling ahead, for minor on-the-spot adjustments of brakes, gears and wheels (at no charge; this is included with any bike purchased from us). For flat tires, again, no appointment needed. Where possible we try and do flat tires while you wait, but there will be times that's not possible. At most you will be leaving your bike overnight. For normal (bigger) repairs, calling ahead to schedule an appointment might make sense because the repair backlog at better shops sometimes goes from overnight to 5 days in the blink of an eye!
It's E-Bike time at Chain Reaction! E-Bikes are the latest thing; find out why! Commute to the office without needing a shower, bring home the groceries (even if you live on top of a hill!) or keep up with your obsessive-cyclist partner. Prices start at just $1299 (Oyama folding E-bike) up to the incredible Trek Super Commuter 8 at $5199.


Disc Brakes for Road Bikes- Making the right choice

Disc brakes are the latest thing for road bikes. But are they the right choice for you? We discuss the trade-offs including benefits, cost, added weight and maintenance requirements.

Just a few of the bikes we sell. One of them is just right for you!

Electra Sprocket 1 - 16-inch
$249.99 $259.99 4% Savings
Electra’s Sprocket 16-inch bikes are perfect for the little munchkins first...
Electra Townie Original 7D EQ Step-Thru
$559.99 - $629.99 $599.99 - $649.99 Up To 3% Savings
Lucky number 7 means gears a-plenty for most general riding. With a Shimano...
Trek Domane AL 2
$599.99 $799.99 25% Savings
Key features - Smooth, comfortable, confidence-inspiring geometry for lo...
Trek Marlin 6
$559.99 - $589.99 $629.99 Up To 6% Savings
Marlin 5 is a trail-worthy daily rider that's perfectly suited for everyday...
Trek FX 2
$499.99 $539.99 7% Savings
Fitness, simplified FX offers a best-of-both-worlds combination of road ...
Trek FX S 4
$1,099.99 - $1,149.99 $1,149.99 - $1,199.99 Up To 4% Savings
Fitness, simplified FX offers a best-of-both-worlds combination of road ...
Trek Emonda ALR 5
$1,299.99 $1,679.99 23% Savings
Every detail of the Émonda line serves the same audacious goal: to create t...
Trek Marlin 5
$499.99 $539.99 7% Savings
Marlin 5 is a trail-worthy daily rider that's perfectly suited for everyday...
Trek Superfly 6 Women's
$1,399.99 $1,789.99 22% Savings
The bike that defined 29er mountain bikes continues to lead the charge. The...
Trek Domane SLR 6
$2,999.99 $4,999.99 40% Savings
Sometimes you get up before dawn to bag a century before lunch, and sometim...
Electra Townie Original 7D EQ Men's
$609.99 $649.99 6% Savings
You'll love gliding around town on Electra's Townie Original 7D. Comes with...
Trek Crockett 5 Disc
$1,399.99 $1,889.99 26% Savings
King of the cross frontier Serious cyclocross performance meets serious ...
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